What is the zip code of usa?
A zip code is just a number given to a specific area, really just to help with postage. For example, instead of something just being in Cincinnati, Ohio, it can be in Cincinnati, Ohio, 45220- the area a zip code covers tends to be smaller than a town, so it’s just a device to narrow down where something could be. It has equivalents in many different countries. For example, the UK “postcode”.
Each state has a different zip code and there are even several zips within each state. Your best bet is to go to http://www.zip-code-database.